Electrospray device, method of producing solar cell anti-reflection layer by electrospray, and solar cell

A solar cell, electrospray technology, applied in spray discharge devices, circuits, electrical components, etc., can solve the problems of cumbersome operation, difficult to adapt to automatic production, low experimental temperature, etc., and achieves low process environment requirements, wide range of uses, and degree of automation high effect

Active Publication Date: 2014-02-19
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The patent document with publication number CN102222728A discloses a preparation method of zinc oxide nano-array anti-reflection layer on the surface of a silicon-based solar cell. The method has a low experimental temperature, and the prepared anti-reflection layer of the solar cell has a good effect, but the operation is cumbersome. Difficult to adapt to modern automatic production

Method used

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  • Electrospray device, method of producing solar cell anti-reflection layer by electrospray, and solar cell
  • Electrospray device, method of producing solar cell anti-reflection layer by electrospray, and solar cell
  • Electrospray device, method of producing solar cell anti-reflection layer by electrospray, and solar cell

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preparation example Construction

[0034] The anti-reflection layer prepared by the method for preparing the anti-reflection layer of a solar cell provided by the invention has a microstructure of an inverted "nanometer bowl" array. Compared with several traditional techniques, the electrospray technique adopted in the present invention has obvious advantages, specifically as follows:

[0035] (1) The whole process does not require chemical corrosion, does not produce toxic gases or odors, and has little impact on the environment;

[0036] (2) The whole process adopts digital control, and various process parameters such as voltage, spray liquid flow rate, electrode spacing, etc. are easy to control, and automatic production can be realized.

[0037] Such as figure 1 As shown, the device required for the preparation of the solar cell anti-reflection layer inverted "nanobowl" array provided by the present invention includes: a micro-injection pump 1, a syringe 2, a silicone rubber tube 3, a programmable high-vol...

Embodiment 1

[0062] Embodiment 1: Both the spray liquid and the TCO substrate 11 are made of nano-FTO material. The specific preparation process of the inverted "nano bowl" anti-reflection layer prepared by electrospray technology is as follows:

[0063] (1) carry out surface modification to the FTO substrate that area is 10cm * 10cm, make the substrate surface have hydrophobicity;

[0064] (2) configure nano FTO solution, its mass percent concentration is 5%, as the spray liquid of electrospray, use magnetic stirrer to stir 2~4 hours at 30 ℃, stand still for 0.5 hour;

[0065] (3) Start the micro-injection pump 1, and its driving flow is 5uL / min, and the nano-FTO solution is delivered to the metal nozzle 5 through the silicon rubber tube 3;

[0066] (4) turn on the PC control unit 10 successively, the cold light source 8 and the CCD high-speed camera 9;

[0067] (5) Start the programmable high-voltage generator 4, whose output voltage is 6kV, and observe the shape, size and density dist...

Embodiment 2

[0069] Embodiment 2: Both the spray liquid and the TCO substrate 11 are made of nanometer AZO material. The specific preparation process of the inverted "nano bowl" anti-reflection layer prepared by electrospray technology is as follows:

[0070] (1) surface-modify the AZO substrate with an area of ​​10cm×10cm to make the surface of the substrate hydrophobic;

[0071] (2) Configure nano-AZO solution, its mass percentage concentration is 5%, as the spray liquid of electrospray, use magnetic stirrer to stir for 2~4 hours at 30 ℃, stand still for 0.5 hour;

[0072] (3) Start the micro-injection pump 1, and its driving flow is 5uL / min, and the nano-ITO solution is delivered to the metal nozzle 5 through the silicon rubber tube 3;

[0073] (4) turn on the PC control unit 10 successively, the cold light source 8 and the CCD high-speed camera 9;

[0074] (5) Start the programmable high-voltage generator 4, whose output voltage is 6KV, and observe the shape, size and density distrib...

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Abstract

The invention discloses an electrospray device and a method of producing a solar cell anti-reflection layer by electrospray. According to the principle of electrospray, an anti-reflection layer in an inverted nano-bowl microstructure and in an inverted approximate hemisphere shape is produced on a transparent conductive film; controlling the shape and size of the inverted 'nano-bowl' by adjusting the parameters such as flow speed of spray, diameter of a nozzle, voltage of a high voltage generator, and spacing between the metal nozzle and the transparent conductive layer; controlling density of the nano-bowl by using a PC control unit to adjust X-directional and Y-directional motion speeds of a moving platform. The anti-reflection layer is produced by the electrospray technology, process environmental requirements are low, the whole process is digitally controlled, and process parameters are easy to control. Through the application of the produced anti-reflection layer, surface reflection of the solar cell can be reduced effectively, light permeability is improved, and photoelectric conversion efficiency of the solar cell is effectively improved in a certain wavelength range.

Description

technical field [0001] The invention belongs to the field of preparation technology of solar cell anti-reflection layer, and more specifically relates to an electrospray device and a method for preparing solar cell anti-reflection layer by electrospray. Background technique [0002] Solar energy is renewable, clean and environmentally friendly. Many countries regard solar energy as a new energy industry that focuses on development. In recent years, due to the increasing market demand in European and American countries, my country's photovoltaic industry has achieved rapid development, with an average annual growth rate of more than 40% in the last five years. At the same time, the photovoltaic industry is also facing many challenges, such as low conversion efficiency and high cost. For conventional solar cells, about one-third of the light is wasted due to reflection, which greatly reduces the conversion efficiency of solar cells. Therefore, it is of great significance to t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05B5/025H01L31/18H01L31/0216
CPCH01L31/02168H01L31/1876Y02E10/50
Inventor 黄永安尹周平陈坚段永青刘慧敏熊有伦
Owner HUAZHONG UNIV OF SCI & TECH
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